Made multiple managers for individual pieces

Added UIManager that renders the UI inside the window

BarinkEngine/graphics/GUI/GUIManager.cpp

@@ -0,0 +1,38 @@
+#include "Graphics/GUI/GUIManager.h"
+#include "imgui.h"
+#include "backends/imgui_impl_opengl3.h"
+#include <backends/imgui_impl_glfw.cpp>
+
+GUIManager::GUIManager(BarinkWindow* window) 
+	: currentwindow(window)
+{
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO();
+    (void)io;
+
+    ImGui::StyleColorsDark();
+    ImGui_ImplGlfw_InitForOpenGL(currentwindow->windowptr(), true);
+    ImGui_ImplOpenGL3_Init("#version 440");
+
+
+    ImGui_ImplGlfw_NewFrame();
+    ImGui_ImplOpenGL3_NewFrame();
+
+}
+
+GUIManager::~GUIManager()
+{
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+}
+
+
+void GUIManager::Render()
+{
+   
+
+    ImGui::Render();
+    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+}